MFT/3 Extension Table

Vindingo

Member
Joined
Jan 23, 2009
Messages
457
I had a homemade extension table that was made from scrap MDF.  It was heavy, wobbly and not portable at all, but it served my needs- until I fell into it and broke it.  Pre-finished maple with sawdust on it is slippery!!!

I started looking at the VL 700 extension and how to adapt it to the MFT/3, but the bang per buck just wasn't there for me.   I was also surprised to find out that there are no extensions ( sold in NA) that utilize the V-groove which are specifically for the MFT/3.  I guess the other choice would be to purchase another MFT.    

I had nothing going on in the shop today, so I decided to make my own.  

Home Depot roller stand: $25
Aluminum angle and flat stock: $40
nuts and bolts: $5
Used MFT top: priceless  (It got rained on, so there was some serious swelling.  I also just about cut through it.  The salvaged dimensions are roughly 20" x 30")
Time: 5hrs -  A lot of this time was spent figuring out the design I wanted, changing things, and going back to the store to get more material.  If I were to build this again, it would probably take an hour, maybe less.  

Final product:
7065922693_e21fdc004f_c.jpg


1/8" x 2" flat stock bolted to 1/8" x 1" x 1.5" angle (started as 1.5 x 1.5 and ripped down size)  I zipped off the top and bottom of the bolts for a semi-permanent connection and so that that it would sit cleanly in the V-groove.  
6919840970_c4e632c28e_z.jpg

6919840782_1e8ea11424_z.jpg


3 holes were drilled in the T and I tapped 3 corresponding holes in the MFT side profiles.
7065920891_e31fd70fba_z.jpg

6919840474_b162d2c3b1_z.jpg


The two pieces of aluminum made it so that the old MFT top was now proud of the surface.  A rabbet, roughly 3/32" x 2" was needed to get the top flush.  I ended up shimming the cut with a scrap of edge banding and it worked out perfectly.  

The anchors from the old MFT top were scavenged, and reused as a way to bolt the MDF to the aluminum angle supports.  
7065921277_22a52a73c1_z.jpg

6919841228_411f4547ae_z.jpg


The space between the angle and the edge banding is where the flange of the T-section will slide in and connect to the MFT.  

In order to fold flat, the angle sections need to be mounted on the outside of the brackets.  The back end of the angle supports are also through bolted into the anchors from the old MFT top.  Notice the hol3 drilled adjacent to the MFT hole directly above the bracket.  This hole lines up with the center bolt on the stand and allows for the stand to fold up.  In retrospect, I could have moved the assembly up 1/4" and it would have landed in the MFT hole - next time.  Folds up flat for easy transport and storage.  

Cannibalized Workforce adjustable height roller stand
7065921453_1f9ee58d3c_z.jpg
   
7065921655_94fe5e8545_z.jpg

7065921541_5d233f2808.jpg


The top is bolted through the angle, T-flange and anchored into the MDF top.  
7065922107_86a902de5e_z.jpg

6919842574_5296ec2034_z.jpg


The width of the bracket with the angle attached just barely clears the MFT holes, which turned out through nothing other than dumb luck.  

6919842712_26213de518_c.jpg

6919842196_78da9b5e70_z.jpg

6919842826_132466f0f3_z.jpg


All of the hardware works with the hex key found in the TS55 in order to make things simple.  I also attempted to line up the holes with the clamping element dogs and the miter fence.  I don't use the holes for aligning cuts, but they are close enough for government work.  

For $70 and a few hours, I have an arguably better extension than the VL 700.  

I hope this one holds up, and these ideas can help someone else here.  

-Vinny

 
 
Nice job Vinny.  That goes straight to the top of my "need to build" list.  Thanks for sharing.
 
Hey Vinny,

That thing looks great.  Want to come to my shop and "throw" one of those together for me.  Also, is the extension an old top flipped over?  It never occured to me to flip the top over for a new worksurface.  Is that possible?  Since I have 2 table bolted together already that means I have 4 worksurfaces!!!

Ted
 
Nice extension. MDF + aluminium works great as tool benches I think. Just an idea, to make it more rugged you could add some aluminium profiles on the side like I did on a tabel of mine:

[attachthumb=1]
 
Tedric Pancoast said:
Hey Vinny,

That thing looks great.  Want to come to my shop and "throw" one of those together for me.  Also, is the extension an old top flipped over?  It never occured to me to flip the top over for a new worksurface.  Is that possible?  Since I have 2 table bolted together already that means I have 4 worksurfaces!!!

Ted

It is an old MFT top flipped over...  what was left of it.  Here was a section I deemed unsuitable for the extension. 
6945238734_c55c4de1af_z.jpg


Alex said:
Nice extension. MDF + aluminium works great as tool benches I think. Just an idea, to make it more rugged you could add some aluminium profiles on the side like I did on a tabel of mine:

[attachthumb=1]

Originally I had that thought also, I even purchased the material to do it, but decided against it.  If I wrapped the outside of the MDF with the angle I had purchased, it left 2mm of MDF exposed.  Admittedly, I am careless with my plunge depths, as well as cut placement and didn't want to keep cutting the aluminum border.  Not that it would be so bad for the blade, but it would get sharp and beat up after a while.  I have adopted the notion that MFT tops are a consumable item, and I would have to change my work habits.    

It does look very nice though.

As far as strength, I put 3 60lb (72kg) bags of concrete on it to test that table and it was fine.  The stand itself is rated at 200lbs (90kg) but it will never see that weight.  

I have started another project, so shop improvements are on hold.  If I can manage to not mess up the extension table, I might do it anyway and try really really hard not to cut it!        
 
Great job Vinny and I noticed that box fan seems to be the same one I use in my shop for "air conditioning".
 
Back
Top